/**************************************************************************** * apps/examples/bmp180/bmp180_main.c * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * bmp180_main ****************************************************************************/ int main(int argc, FAR char *argv[]) { int fd; int ret; uint32_t sample; fd = open("/dev/press0", O_RDONLY); while (1) { ret = read(fd, &sample, sizeof(uint32_t)); if (ret != sizeof(sample)) { perror("Could not read"); break; } printf("Pressure value = %05" PRId32 "\n", sample); usleep(500000); } close(fd); return 0; }